🌡️ COOPER Atkins 1246-02-2 Bi-Metal Pocket Thermometer, Adjustment Sheath, NSF Certified, 0-220°F Temp Range (Pack of 2), Silver Review

This thermometer performs accurately and consistently, making it a great addition to any toolkit for Tools and Home Improvement needs. It's easy to use and the adjustment temperature function provides added convenience. The only downside is that the screen can be difficult to read in dimly-lit areas. Overall, it's a reliable and useful tool for temperature testing.

Requires recalibration every time you use it for home cooking. It is best used to keep in a makeshift hole in a commercial fridge so you can never touch or knock it out. Too uncomfortable.

I use this type of thermometer in my job and yes it can fail. The ones I've used don't come with a calibration key. The fact that this is the case makes it invaluable.